Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Tables)

v2.4.1.9
Stock-based compensation (Tables)
 3 Months Ended
Mar. 31, 2015
Tecogen  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Stock Option Activity
Stock option activity for the three months ended March 31, 2015 was as follows: 
Common Stock Options
Number of
Options
 
Exercise
Price
Per
Share
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Life
 
Aggregate
Intrinsic
Value
Outstanding, December 31, 2014
1,356,325

 
 $1.20-$5.39

 
$
2.77

 
5.12 years

 
$
3,618,935

Granted
—

 


 
—

 
—

 
—

Exercised
(222,375
)
 
$1.20-$2.60

 
1.62

 
—

 
—

Canceled and forfeited
(13,150
)
 
 $2.60-$4.50

 
3.15

 
—

 
—

Expired
—

 
—

 
—

 
—

 
—

Outstanding, March 31, 2015
1,120,800

 
 $1.20-$5.39

 
$
2.99

 
6.20 years

 
$
2,330,359

Exercisable, March 31, 2015
759,144

 
 
 
$
2.21

 
 
 
$
2,171,496

Vested and expected to vest, March 31, 2015
1,120,800

 
 
 
$
2.99

 
 

 
$
2,330,359

Ilois  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Restricted Stock Activity
onsolidated stock-based compensation expense for the three months ended March 31, 2015 and 2014 was $93,254 and $32,491, respectively. No tax benefit was recognized related to the stock-based compensation recorded during the periods.